fix: normalize null Gitea collection payloads (#69)

src/main.py

@@ -86,17 +86,17 @@ async def context() -> JSONResponse:
     user_model = User(id=user_data["id"], login=user_data["login"], full_name=user_data.get("full_name", ""), email=user_data.get("email", ""))
     repo_models = [
         Repo(id=r["id"], name=r["name"], full_name=r["full_name"], description=r.get("description") or "", url=r["html_url"], updated_at=r.get("updated_at", ""))
-        for r in repo_data[:50]
+        for r in (repo_data or [])[:50]
         if isinstance(r, dict)
     ]
     issue_models = [
         Issue(id=i["id"], number=i["number"], title=i["title"], state=i["state"], labels=[l.get("name", "") for l in (i.get("labels") or [])], assignees=[a.get("login", "") for a in (i.get("assignees") or [])], url=i["html_url"])
-        for i in issues_data[:50]
+        for i in (issues_data or [])[:50]
         if isinstance(i, dict)
     ]
     pr_models = [
         PullRequest(id=p["id"], number=p["number"], title=p["title"], state=p["state"], user=(p.get("user") or {}).get("login", ""), url=p["html_url"])
-        for p in prs_data[:50]
+        for p in (prs_data or [])[:50]
         if isinstance(p, dict)
     ]
     ctx = compute(user_model, repo_models, issue_models, pr_models)